OHRURA warehouse RM1002C0000 dual channel paper recorder detailed explanation

1、 Product positioning and basic overview

RM1002C0000 is a dual channel pen type paper recorder produced by Okura Electric Co., Ltd. (OHKURA) in Japan, belonging to the RM10C series products. Compared with the single channel RM1001C0000, it can simultaneously record two measurement signals, making it particularly suitable for industrial scenarios that require comparative analysis or correlated monitoring. As a classic equipment in the field of industrial automation, it uses two recording pens to depict data curves in real-time on dedicated recording paper, providing intuitive process monitoring and historical traceability.

2、 Comparison Table of Core Specification Parameters

|Parameter Item | RM1002C0000 Specification | Difference from RM1001C0000|

|--------|----------------|-------------------|

|Recording method | Dual channel pen style recording (2 recording pens) | With an additional channel, 2 sets of data can be recorded simultaneously|

|Record paper specifications | Width 100mm, length 16m, folded width 40mm | Same|

|Dimensions | 144 (W) × 144 (H) × 150 (D) mm | Same, suitable for standard 144 × 144mm panel installation|

|Weight | Approximately 1.5kg | Same, one of the lightest recorders in the industry|

|Protection level | IP65 dustproof and waterproof | Same, suitable for harsh industrial environments|

|Power supply | 100~240V AC (50/60Hz), power consumption ≤ 30VA | Same|

|Display | 18mm high large LED, capable of displaying two channels of data simultaneously | Rich display content, switchable display channels|

|Communication | RS-232C (standard), optional RS-485 | Same, supports data upload to PC|

|Alarm function | 4 levels of alarms per channel (upper/lower limit), 3 relay outputs (220VAC/3A) | More alarm points, can monitor dual channel anomalies simultaneously|

|Accuracy | Recording accuracy ± 0.3%, reference compensation accuracy ± 1 ° C | Same|

|Sampling period | 125ms (high-speed sampling) | Same to ensure real-time data performance|

3、 Detailed explanation of functional features

1. Dual channel parallel recording system

-Equipped with two independent recording pens (red and green), capable of simultaneously recording two different signals

-The dual pen design makes it easy to compare and analyze two parameters at a glance, saving space and cost

-Each channel can independently set the measurement range, alarm value, and recording characteristics without interfering with each other

-Automatically print channel numbers and time stamps on recording paper for easy data traceability

2. Signal compatibility and measurement capability

-Full input: Supports 14 types of thermocouples (K, R, T, J, E, B, S, etc.), 2 types of thermal resistors (Pt100, JPT100), 7 types of DC voltages (± 10mV~± 10V), and 1 type of DC current (4~20mA)

-Input impedance ≥ 10M Ω (voltage measurement) to ensure accuracy and stability of signal measurement

-The channel adopts optoelectronic isolation technology (CMRR ≥ 140dB), which has strong anti-interference ability and is particularly suitable for multi interference source environments

-Support automatic compensation for cold ends to ensure measurement accuracy of thermocouples

3. High speed recording and flexible configuration

-Wide range of paper speed options: 0-1500mm/h (34 speeds) or 5-12000mm/h (41 speeds), suitable for different recording density requirements

-Record color differentiation: Channel 1 (red pen), Channel 2 (green pen), for easy identification of different parameter curves

-Can set timed printing (1-99 minutes), automatically marking data points and time on recording paper

-Equipped with manual paper feeding function (FEED key) for easy calibration and positioning after replacing recording paper

4. Intelligent alarm and control functions

-Each channel can independently set 4 levels of alarms (H1/H2 upper limit, L1/L2 lower limit), and the alarm return difference of each channel can be adjusted (about 0.5%)

-Three sets of relay outputs (250V AC/3A max) can be connected to different devices to achieve graded alarm response

-When an alarm occurs, the alarm mark will be automatically printed on the recording paper, and the relay will act simultaneously, which can be linked to external devices such as sound and light alarms and controllers

-Support maintaining alarm status until manually confirmed or the fault is eliminated, ensuring that abnormal situations are not missed

4、 Working principle

RM1002C0000 adopts a dual CPU parallel processing architecture to achieve dual channel independent measurement and recording:

1. The two channel input signals are respectively amplified, filtered, and linearized by signal conditioning circuits

2. Convert to digital quantity through a 24 bit high-precision AD converter to ensure measurement accuracy

3. The microprocessor processes two channels of data separately and controls the lateral displacement of the corresponding recording pen

4. Simultaneously drive the paper feeding mechanism to achieve longitudinal movement, forming a complete curve record

5. The 18mm high LED display screen displays measurement values in real-time, and can switch display channels or display dual values simultaneously through buttons

5、 Application scenarios

The RM1002C0000 dual channel design makes it particularly suitable for the following applications:

1. Industrial temperature monitoring system

-Monitoring the temperature difference between the heat treatment furnace chamber and the workpiece to optimize heating efficiency

-Comparison of temperature between the inner and outer walls of the reaction vessel to prevent local overheating or uneven reactions

-Temperature monitoring of inlet and outlet of drying equipment to evaluate drying effect and energy consumption

2. Environmental and equipment monitoring

-Measurement of return air temperature difference in air conditioning system and evaluation of system efficiency

-Temperature monitoring inside and outside the electrical cabinet to prevent equipment overheating

-Synchronized recording of clean room temperature and humidity to meet GMP and other compliance requirements

3. Energy and Public Utilities

-Measurement of temperature difference between inlet and outlet of heat exchanger to evaluate heat transfer efficiency

-Comparison of boiler water supply and steam temperature, monitoring of energy conversion process

-Simultaneous monitoring of three-phase temperature in power equipment, early detection of three-phase imbalance faults

4. Experiment and research and development

-Synchronize temperature and strain recording for material testing, analyze material properties

-Research on the relationship between chemical reaction temperature and pressure, and optimization of process parameters

-Multi parameter parallel monitoring for device performance testing, comprehensive evaluation of device stability

6、 Operation and maintenance

1. Installation steps

-Panel opening: 144 (W) × 144 (H) mm standard size

-Fixed installation: Insert from the front of the panel and lock the rear with a fixing clip

-Wiring: Connect two channels of signal input, power supply, and alarm output separately

-Grounding: Ensure good grounding and improve anti-interference ability

2. Replacement of recording paper and ribbon

Installation of recording paper:

1. Open the paper compartment door and remove the old paper shaft

2. Install new recording paper (with the front facing outward and the scratched surface as the front)

3. Align the paper hole with the drum teeth, pull it out and fold it 3-5 times

4. Close the paper compartment door and press the FEED button to test the paper feeding

Ribbon replacement:

-Open the pen holder cover and remove the old ribbon

-Insert the dual ribbon (red/green) and ensure it is securely fastened

-Cover the protective cover and adjust the pen pressure (ensure clear recording)

3. Parameter setting process

Power on → Press SET key to enter menu → Select channel (CH1/CH2) → Set measurement type (thermocouple/thermistor/voltage/current) →

Set range → Set alarm value (H1/H2/L1/L2) → Set paper feed speed → Confirm save → Return to measurement status

4. Key points of daily maintenance

-Regularly check the remaining amount of recording paper and ribbon, and replace them in a timely manner (recommended to check once a week)

-Cleaning and maintenance: Clean the casing and display screen monthly to ensure good heat dissipation

-Check the alarm function: Test the alarm response every quarter to ensure that the relay operates normally

-Long term disuse: unplug the power and store in a dry and dust-free environment to prevent component damage

7、 Advantages compared to RM1001C0000 (single channel)

|Advantages | RM1002C0000 Dual Channel | RM1001C0000 Single Channel|

|---------|-------------------|-------------------|

|Monitoring efficiency | Recording 2 parameters simultaneously, doubling efficiency | Only 1 parameter can be recorded at a time|

|Space saving | Replace 2 single channels with 1 device, saving 50% panel space | Each parameter requires a separate device|

|Data correlation | Intuitively display the relationship between two parameters, making it easy to analyze causality and mutual influence | Cannot directly compare and analyze different parameters|

|Application scope | Especially suitable for scenarios that require parameter comparison (such as temperature difference and efficiency analysis) | Suitable for long-term monitoring of a single parameter|

8、 Selection suggestions and precautions

Key points for confirmation before purchase:

1. Measurement signal type: Confirm the type of signal that needs to be monitored (thermocouple, thermistor, or voltage/current)

2. Measurement range: Clearly define the measurement range of the two channels to ensure correct selection

3. Environmental conditions: Confirm the usage environment (temperature, humidity, dust situation) to ensure that IP65 protection meets the requirements

4. Alarm requirements: Clearly define the number of alarm points and response methods to ensure sufficient relay output quantity

5. Communication requirements: If remote monitoring is required, confirm whether RS-485 (optional) is needed

Accessories selection list:

-Recording paper (WPR series, 100mm wide, 16m long)

-Dual color bands (red/green, used for dual channel recording)

-Optional RS-485 communication module (for multi device networking)

-Alarm indicator light or external alarm (enhance alarm visibility)

9、 Summary

The OHRURA large warehouse RM1002C0000 dual channel paper recorder has significant advantages in industrial scenarios where two parameters need to be monitored simultaneously, thanks to its dual pen parallel recording and full energy signal compatibility characteristics. Compared with single channel products, it not only improves monitoring efficiency, but also saves panel space and equipment costs, making it particularly suitable for applications such as temperature comparison, efficiency analysis, and correlated parameter monitoring.

Today, with the increasing popularity of digitization and paperless recording, paper-based recorders still have irreplaceable value in industrial environments that require long-term preservation, legal traceability, or unstable power grids due to their advantages of data intuitiveness, physical permanence, and resistance to electromagnetic interference.